Camera Lens

ABSTRACT

The present disclosure discloses a camera lens. The camera lens including, in an order from an object side to an image side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, a fifth lens having a positive refractive power, and a sixth lens having a negative refractive power. The camera lens further satisfies specific conditions.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Japanese PatentApplications Ser. No. 2018-041753 filed on Mar. 08, 2018, the entirecontent of which is incorporated herein by reference.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to acamera lens suitable for handheld devices such as smart phones anddigital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but the photosensitivedevices of general camera lens are no other than Charge Coupled Device(CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor),and as the progress of the semiconductor manufacturing technology makesthe pixel size of the photosensitive devices shrink, coupled with thecurrent development trend of electronic products being that theirfunctions should be better and their shape should be thin and small,miniature camera lens with good imaging quality therefor has become amainstream in the market.

A typical related camera lens comprises six lenses, and from the objectside to the image side, the camera lens comprises in sequence: a firstlens with a positive refractive power, a second lens with a negativerefractive power, a third lens with a positive refractive power, afourth lens with a negative refractive power, a fifth lens with apositive refractive power, a sixth lens with a negative refractivepower.

However, the refractive index distribution of the first lens and theshape of the fourth lens and the fifth lens are insufficient, theluminance is not sufficient for Fno>2.14. In other traditional cameralenses, although Fno≥2.15, but the luminance is insufficient.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood withreference to the following drawings. The components in the drawing arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera lens LA in accordance with anembodiment of the present invention;

FIG. 2 is a schematic diagram of the camera lens LA in accordance with afirst embodiment of the present invention;

FIG. 3 shows the longitudinal aberration of the camera lens LA shown inFIG. 1;

FIG. 4 shows the lateral color of the camera lens LA shown in FIG. 1;

FIG. 5 presents a schematic diagram of the field curvature anddistortion of the camera lens LA shown in FIG. 1;

FIG. 6 is a schematic diagram of a camera lens LA in accordance with asecond embodiment of the present invention;

FIG. 7 presents the longitudinal aberration of the camera lens LA shownin FIG. 6;

FIG. 8 presents the lateral color of the camera lens LA shown in FIG. 6,

FIG. 9 presents the field curvature and distortion of the camera lens LAshown in FIG. 6;

FIG. 10 is a schematic diagram of a camera lens LA in accordance with athird embodiment of the present invention;

FIG. 11 presents the longitudinal aberration of the camera lens LA shownin FIG. 10;

FIG. 12 presents the lateral color of the camera lens LA shown in FIG.10;

FIG. 13 presents the field curvature and distortion of the camera lensLA shown in FIG. 10.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

As referring to FIG. 1, the present invention provides a camera lens LA.FIG. 1 shows the camera lens LA of the present invention, the cameralens LA comprises six lenses. Specifically, from the object side to theimage side, the camera lens LA comprises in sequence: a first lens L1, asecond lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, anda sixth lens L6. A glass plate GF may be arranged between the sixth lensL6 and the image surface Si or not be arranged between the sixth lens L6and the image surface Si. The glass plate GF is a cover-glass or afilter with IR cut-off function.

The first lens L1 has a positive refractive power, the second lens L2has a negative refractive power, the third lens L3 has a positiverefractive power, the fourth lens L4 has a negative refractive power,the fifth lens L5 has a positive refractive power, and the sixth lens L6has a negative refractive power. In order to correct the aberrationproblem, the surface of the six lens should be designed to asphericalsurface.

Here, the focal length of the camera lens LA is defined as f, the focallength of the first lens L1 is defined as f1, the curvature radius ofthe object side surface of the fourth lens L4 is defined as R7, thecurvature radius of the image side surface of the fourth lens L4 isdefined as R8, the curvature radius of the object side surface of thefifth lens L5 is defined as R9, the curvature radius of the image sidesurface of the fifth lens L5 is defined as R10. The camera lens LAsatisfies the following conditions:

1.00≤f1/f≤1.10   (1)

11.40≤(R7+R8)/(R7−R8)≤16.00   (2)

0.15≤(R9+R10)/(R9−R10)≤0.25   (3)

Condition (1) fixes the positive refractive power of the first lens L1.If the lower limit of the set value is exceeded, although it benefitsthe miniaturized development of lenses, but the positive refractivepower of the first lens L1 will be too strong, problem like aberrationis difficult to be corrected. On the contrary, if the upper limit of theset value is exceeded, the positive refractive power of the first lensL1 becomes too weak, it is then difficult to develop miniaturizedlenses.

Condition (2) fixes the shape of the fourth lens L4. When the value ofthe upper condition (2) is exceeded, and it is also unfavorable for highlight flux, excellent optical characteristics, and miniaturizeddevelopment of lens.

Condition (3) fixes the shape of the fifth lens L5. When the value ofthe upper condition (3) is exceeded, and it is also unfavorable for highlight flux, excellent optical characteristics, and miniaturizeddevelopment of lens.

Here, the focal length of the second lens L2 is defined as f2, the focallength of the fourth lens L4 is defined as f4. The camera lens LAsatisfies the following conditions:

0.15≤f2/f4≤0.16   (4)

Condition (4) fixes the ratio between the focal length f2 of the secondlens L2 and the focal length f4 of the fourth lens L4. When the value ofthe upper condition (4) is exceeded, and it is also unfavorable for highlight flux, excellent optical characteristics, and miniaturizeddevelopment of lens.

Here, the focal length of the sixth lens L6 is defined as f6, and the iscurvature radius of the object side surface of the sixth lens L6 isdefined as R11. The sixth lens L6 has a negative refractive power andfurther satisfies the following condition (5):

2.30≤R11/f≤2.50   (5)

Condition (5) fixes the ratio between the curvature radius R11 of theobject side surface of the sixth lens L6 and the focal length f of thewhole camera lens LA. When the value of the upper condition (5) isexceeded, and it is also unfavorable for high light flux, excellentoptical characteristics, and miniaturized development of lens.

Because the six lens of the camera lens LA satisfy the foresaidconditions, the camera lens LA can be manufactured with excellentoptical characteristics, miniaturization and high light flux (Fno).

The design information of the camera lens LA in an embodiment of thepresent invention is shown in the following, the unit of the focallength, distance, radius and center thickness is mm

In which, the meaning of the various symbols is as follows.

f: The focal length of the camera lens;

f1: The focal length of the first lens L1;

f2: The focal length of the second lens L2;

f3: The focal length of the third lens L3;

f4: The focal length of the fourth lens L4;

f5: The focal length of the fifth lens L5;

f6: The focal length of the sixth lens L6;

Fno: F value;

2ω: Field;

S1: Aperture;

R: The curvature radius of the optical surface, the central curvatureradius in case of lens;

R1: The curvature radius of the object side surface of the first lensL1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lensL2;

R4: The curvature radius of the image side surface of the second lensL2;

R5: The curvature radius of the object side surface of the third lensL3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lensL4;

R8: The curvature radius of the image side surface of the fourth lensL4;

R9: The curvature radius of the object side surface of the fifth lensL5;

R10: The curvature radius of the image side surface of the fifth lensL5;

R11: The curvature radius of the object side surface of the sixth lensL6;

R12: The curvature radius of the image side surface of the sixth lensL6;

R13: The curvature radius of the object side surface of the glass plateGF;

R14: The curvature radius of the image side surface of the glass plateGF;

d: The thickness on-axis of the lens and the distance on-axis betweenthe lens;

d0: The distance on-axis from aperture S1 to the object side surface ofthe first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lensL1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lensL2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lens

L3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lensL4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lensL5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lensL6 to the object side surface of the optical filter GF;

d13: The thickness on-axis of the optical filter GF;

d14: The distance on-axis from the image side surface to the imagesurface of the optical filter GF;

nd: The refractive power of the d line;

nd1: The refractive power of the d line of the first lens L1;

nd2: The refractive power of the d line of the second lens L2;

nd3: The refractive power of the d line of the third lens L3;

nd4: The refractive power of the d line of the fourth lens L4;

nd5: The refractive power of the d line of the fifth lens L5;

nd6: The refractive power of the d line of the sixth lens L6;

nd7: The refractive power of the d line of the glass plate GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

v7: The abbe number of the glass plate GF;

IH:Image height;

TTL:Optical length (the distance on-axis from the object side surface ofthe first lens L1 to the image surface);

LB: The distance on-axis from the image side surface of the sixth lensL6 to the image surface (including the thickness of the glass plate GF);

y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2) ]+A4x ⁴ +A6x ⁶ +A8x ⁶ +A8x ⁸+A10x ¹⁰ +A12x ¹² +A14x ¹⁴ +A16x ¹⁶ +A18x ¹⁸ +A20x ²⁰   (6)

Among them, R is a curvature radius on-axis, K is a conic index, A4, A6,A8, A10, Al2, A14, A16, A18, A20 are aspheric surface indexes.

For convenience, the aspheric surface of each lens surface uses theaspheric surfaces shown in the above condition (6). However, the presentinvention is not limited to the aspherical polynomials form shown in thecondition (6).

Embodiment 1

FIG. 2 is a schematic diagram of the camera lens LA in accordance with afirst embodiment of the present invention. The data of table 1 includes:the curvature radius R of the object side and the image side from thefirst lens L1 to the sixth lens L6, the central distance of lens and thedistance d between lenses, the refractive power nd and the abbe numbervd. The data of table 2 includes: conic index k, aspheric surface index.

TABLE 1 R d nd ν d S1 ∞ d0= −0.400 R1 1.65682 d1= 0.598 nd1 1.5441 ν 156.04 R2 4.44584 d2= 0.056 R3 4.27155 d3= 0.233 nd2 1.6614 ν 2 20.41 R42.36212 d4= 0.257 R5 2.92027 d5= 0.441 nd3 1.5441 ν 3 56.04 R6 7.14159d6= 0.448 R7 5.75237 d7= 0.325 nd4 1.6398 ν 4 23.27 R8 4.83575 d8= 0.393R9 6.19213 d9= 0.564 nd5 1.5441 ν 5 56.04 R10 −4.28608 d10= 0.243 R1110.14013 d11= 0.343 nd6 1.5441 ν 6 56.04 R12 1.41653 d12= 0.350 R13 ∞d13= 0.300 nd7 1.5168 ν 7 64.17 R14 ∞ d14= 0.392

TABLE 2 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 R1−7.3096E−05 −7.7522E−03 2.7173E−02 −7.7363E−02 9.4978E−02 −6.6391E−02 R2−5.0661E−03 −1.1602E−01 2.7521E−01 −4.0231E−01 2.9095E−01 −9.5822E−02 R3 6.9197E−03 −1.7435E−01 4.2348E−01 −5.5670E−01 3.9319E−01 −9.9777E−02 R4−2.5853E−03 −1.2075E−01 3.2093E−01 −4.5563E−01 4.4034E−01 −2.5242E−01 R5 2.2078E−03 −6.4554E−02 3.9610E−02  3.2971E−02 −2.8316E−01   4.5553E−01R6  7.5761E−02 −5.5738E−02 2.6956E−03  8.4503E−02 −3.2345E−01  4.1873E−01 R7  4.6944E−02 −1.4435E−01 1.0530E−02  1.5580E−01−3.5343E−01   3.3416E−01 R8 −1.3192E−02 −1.6949E−01 7.7943E−02−3.9263E−02 1.1546E−02 −7.8459E−03 R9  7.7019E−02 −7.4645E−03−4.2344E−02  −9.4285E−03 2.6541E−02 −2.2889E−02 R10 −4.4699E+01 5.4031E−02 −4.3121E−02   2.6460E−02 −2.1739E−02   1.0859E−02 R11 1.1120E−01 −3.0539E−01 1.9838E−01 −7.7608E−02 2.1680E−02 −4.5053E−03R12 −8.1878E+00 −1.4997E−01 8.4696E−02 −3.3079E−02 7.5243E−03−7.9053E−04 Aspherical Surface Index A14 A16 A18 A20 R1  1.9259E−02−2.2869E−03  R2  4.3789E−03 2.4737E−03 R3 −1.2918E−02 6.5498E−03 R4 1.1049E−01 −2.9670E−02  R5 −3.2601E−01 9.1477E−02 R6 −2.6132E−016.4820E−02 R7 −1.6446E−01 3.2921E−02 R8  5.9477E−03 −1.2200E−03  R9 6.6625E−03 4.3017E−04 −3.9591E−04 3.2912E−05 R10 −3.0670E−03 5.1467E−04−4.9432E−05 2.1071E−06 R11 −7.1938E−04 −8.7641E−05   7.1646E−06−2.7854E−07  R12 −1.7760E−05 1.3218E−05 −1.2153E−06 3.6877E−08

Table 7 shows the various values of the embodiments 1, 2, 3, and thevalues corresponding with the parameters which are already specified inthe conditions (1)˜(5).

As shown in Table 7, the embodiment 1 satisfies the conditions (1)˜(5).

In this embodiment, the longitudinal aberration of the camera lens LA isshown in FIG. 3, the lateral color of the camera lens LA is shown inFIG. 4, and the field curvature and distortion of the camera lens LA isshown in FIG. 5. In addition, the field curvature S in FIG. 5 is a fieldcurvature in the sagittal derection, T is a field curvature in themeridian derection. This is the same as in embodiment 2 and embodiment3. As shown in FIG. 3 to FIG. 5, in this embodiment, the optical lengthTTL of the camera lens LA is 4.942 mm, the F value Fno is 1.82, hencethe camera lens LA has an excellent optical characteristics withminiaturization and high light flux (Fno).

Embodiment 2

FIG. 6 is a schematic diagram of a camera lens LA in accordance with asecond embodiment of the present invention. The data of table 3includes: the curvature radius R of the object side and the image sidefrom the first lens L1 to the sixth lens L6, the central distance oflens and the distance d between lenses, the refractive power nd and theabbe number vd. The data of table 4 includes: conic index k, asphericsurface index.

Table 3 and table 4 show the design data of the camera lens LA inembodiment 2 of the present invention.

TABLE 3 R d nd ν d S1 ∞ d0= −0.400 R1 1.68662 d1= 0.562 nd1 1.5441 ν 156.04 R2 5.00226 d2= 0.046 R3 4.32430 d3= 0.226 nd2 1.6614 ν 2 20.41 R42.53903 d4= 0.279 R5 3.06567 d5= 0.393 nd3 1.5441 ν 3 56.04 R6 6.68294d6= 0.458 R7 5.41132 d7= 0.293 nd4 1.6398 ν 4 23.27 R8 4.67508 d8= 0.356R9 6.75979 d9= 0.589 nd5 1.5441 ν 5 56.04 R10 −4.50657 d10= 0.230 R1110.02818 d11= 0.411 nd6 1.5441 ν 6 56.04 R12 1.42731 d12= 0.350 R13 ∞d13= 0.300 nd7 1.5168 ν 7 64.17 R14 ∞ d14= 0.377

TABLE 4 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 R1−1.8622E−02 −8.9916E−03 2.6716E−02 −7.7670E−02 9.4983E−02 −6.6268E−02 R2−1.5152E+00 −1.1791E−01 2.7331E−01 −4.0282E−01 2.9148E−01 −9.4978E−02 R3−1.8770E+00 −1.7760E−01 4.2258E−01 −5.5801E−01 3.9130E−01 −1.0142E−01 R4 1.8088E−01 −1.1748E−01 3.1930E−01 −4.6111E−01 4.3581E−01 −2.5493E−01 R5 2.2705E−01 −6.3146E−02 3.8893E−02  3.5544E−02 −2.8003E−01   4.5703E−01R6 −1.3068E+01 −5.9907E−02 7.2847E−03  8.6036E−02 −3.2413E−01  4.1813E−01 R7  4.7347E−01 −1.4389E−01 7.5080E−03  1.5522E−01−3.5328E−01   3.3406E−01 R8  1.4876E+00 −1.6692E−01 7.6734E−02−4.0102E−02 1.1374E−02 −7.7899E−03 R9  2.6135E+00 −3.7496E−03−4.4209E−02  −9.6328E−03 2.6575E−02 −2.2870E−02 R10 −3.5687E+01 5.6222E−02 −4.3414E−02   2.6362E−02 −2.1754E−02   1.0857E−02 R11−3.1194E+00 −3.0593E−01 1.9828E−01 −7.7618E−02 2.1679E−02 −4.5053E−03R12 −7.6463E+00 −1.4911E−01 8.4752E−02 −3.3102E−02 7.5207E−03−7.9087E−04 Aspherical Surface Index A14 A16 A18 A20 R1  1.9326E−02−2.3477E−03  R2  4.6819E−03 2.0220E−03 R3 −1.3468E−02 7.6070E−03 R4 1.0989E−01 −2.8935E−02  R5 −3.2642E−01 8.9860E−02 R6 −2.6110E−016.5698E−02 R7 −1.6506E−01 3.1936E−02 R8  6.0219E−03 −1.1745E−03  R9 6.6676E−03 4.3161E−04 −3.9526E−04 3.3278E−05 R10 −3.0672E−03 5.1465E−04−4.9438E−05 2.1043E−06 R11  7.1941E−04 −8.7632E−05   7.1665E−06−2.7824E−07  R12 −1.7774E−05 1.3221E−05 −1.2144E−06 3.7065E−08

As shown in Table 7, the embodiment 2 satisfies the conditions (1)˜(5).

In this embodiment, the longitudinal aberration of the camera lens LA isshown in FIG. 7, the lateral color of the camera lens LA is shown inFIG. 8, and the field curvature and distortion of the camera lens LA isshown in FIG. 9. As shown in FIG. 7 to FIG. 9, in this embodiment, theoptical length TTL of the camera lens LA is 4.870 mm, the F value Fno is1.82, hence the camera lens LA has an excellent optical characteristicswith miniaturization and high light flux (Fno).

Embodiment 3

FIG. 10 is a schematic diagram of a camera lens LA in accordance with athird embodiment of the present invention. The data of table 5 includes:the curvature radius R of the object side and the image side from thefirst lens L1 to the sixth lens L6, the central distance of lens and thedistance d between lenses, the refractive power nd and the abbe numbervd. The data of table 6 includes: conic index k, aspheric surface index.

Table 5 and table 6 show the design data of the camera lens LA inembodiment 3 of the present invention.

TABLE 5 R d nd ν d S1 ∞ d0= −0.400 R1 1.63757 d1= 0.595 nd1 1.5441 ν 156.04 R2 4.15668 d2= 0.039 R3 4.38406 d3= 0.235 nd2 1.6614 ν 2 20.41 R42.55654 d4= 0.282 R5 3.07508 d5= 0.441 nd3 1.5441 ν 3 56.04 R6 7.27057d6= 0.464 R7 4.15958 d7= 0.287 nd4 1.6398 ν 4 23.27 R8 3.66436 d8= 0.386R9 6.83702 d9= 0.566 nd5 1.5441 ν 5 56.04 R10 −4.28035 d10= 0.226 R1110.44120 d11= 0.367 nd6 1.5441 ν 6 56.04 R12 1.42705 d12= 0.350 R13 ∞d13= 0.300 nd7 1.5168 ν 7 64.17 R14 ∞ d14= 0.387

TABLE 6 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 R1 7.0126E−03 −8.1439E−03 2.8159E−02 −7.6472E−02 9.5502E−02 −6.6254E−02 R2−7.4194E−01 −1.1728E−01 2.7345E−01 −4.0284E−01 2.9129E−01 −9.5365E−02 R3−1.1608E+00 −1.7661E−01 4.2346E−01 −5.5706E−01 3.9241E−01 −1.0041E−01 R4 4.0591E−01 −1.1549E−01 3.2312E−01 −4.5718E−01 4.3911E−01 −2.5260E−01 R5 1.9904E−02 −6.4129E−02 3.6747E−02  3.3107E−02 −2.8092E−01   4.5766E−01R6 −1.0425E+01 −5.9844E−02 4.5817E−03  8.6609E−02 −3.2240E−01  4.1918E−01 R7 −1.6736E+00 −1.4568E−01 1.0422E−02  1.5670E−01−3.5272E−01   3.3448E−01 R8 −1.1760E−01 −1.6957E−01 7.7561E−02−3.9747E−02 1.1292E−02 −7.9351E−03 R9  6.7504E+00 −2.9036E−03−4.4045E−02  −9.7755E−03 2.6520E−02 −2.2877E−02 R10 −4.2834E+01 5.4355E−02 −4.3147E−02   2.6446E−02 −2.1743E−02   1.0858E−02 R11 4.8860E−02 −3.0539E−01 1.9837E−01 −7.7611E−02 2.1679E−02 −4.5055E−03R12 −8.3977E+00 −1.5011E−01 8.4680E−02 −3.3087E−02 7.5230E−03−4.9072E−04 Aspherical Surface Index A14 A16 A18 A20 R1  1.9086E−02−2.6490E−03  R2  4.5120E−03 2.2119E−03 R3 −1.2929E−02 7.2641E−03 R4 1.1125E−01 −2.8530E−02  R5 −3.2528E−01 9.0532E−02 R6 −2.6100E−016.5242E−02 R7 −1.6448E−01 3.2738E−02 R8  5.9298E−03 −1.2163E−03  R9 6.6684E−03 4.3169E−04 −3.9579E−04 3.2769E−05 R10 −3.0671E−03 5.1467E−04−4.9426E−05 2.1096E−06 R11  7.1936E−04 −8.7643E−05   7.1648E−06−2.7841E−07  R12 −1.7779E−05 1.3217E−05 −1.2153E−06 3.6925E−08

As shown in Table 7, the embodiment 3 satisfies the conditions (1)˜(5).

In this embodiment, the longitudinal aberration of the camera lens LA isshown in FIG. 11, the lateral color of the camera lens LA is shown inFIG. 12, and the field curvature and distortion of the camera lens LA isshown in FIG. 13. As shown in FIG. 11 to FIG. 13, in this embodiment,the optical length TTL of the camera lens LA is 4.925 mm, the F valueFno is 1.82, hence the camera lens LA has an excellent opticalcharacteristics with miniaturization and high light flux (Fno).

Table 7 shows the various values of the embodiments 1, 2, 3, and thevalues corresponding with the parameters which are already specified inthe conditions (1)˜(5). In addition, the units of the various valuesshown in table 5 are 2ω (°)

f (mm)

f1 (mm)

f2 (mm)

f3 (mm)

f4 (mm)

f5 (mm)

f6 (mm) TTL (mm)

LB (mm)

IH (mm).

TABLE 7 Embodiment Embodiment Embodiment 1 2 3 Notes f1/f 1.043 1.0561.076 Condition (1) (R7 + R8)/ 11.551 13.700 15.799 Condition (2) (R7 −R8) (R9 + R10)/ 0.182 0.200 0.230 Condition (3) (R9 − R10) f2/f4 0.1520.154 0.157 Condition (4) R11/f 2.344 2.400 2.450 Condition (5) Fno 1.821.82 1.82 2 ω 74.7 75.4 74.6 f 4.326 4.179 4.262 f1 4.513 4.413 4.585 f2−8.396 −9.792 −9.773 f3 8.758 10.026 9.445 f4 −55.061 −63.578 −62.163 f54.745 5.063 4.927 f6 −3.069 −3.111 −3.082 TTL 4.942 4.870 4.925 LB 1.0421.027 1.037 IH 3.300 3.300 3.300

In which, the meaning of the various symbols is as follows.

LA: The camera lens;

S1: Aperture;

L1: the first lens;

L2: the second lens;

L3: the third lens;

L4: the fourth lens;

L5: the fifth lens;

L6: the sixth lens;

R1: The curvature radius of the object side surface of the first lensL1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lensL2;

R4: The curvature radius of the image side surface of the second lensL2;

R5: The curvature radius of the object side surface of the third lensL3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lensL4;

R8: The curvature radius of the image side surface of the fourth lensL4;

R9: The curvature radius of the object side surface of the fifth lensL5;

R10: The curvature radius of the image side surface of the fifth lensL5;

R11: The curvature radius of the object side surface of the sixth lensL6;

R12: The curvature radius of the image side surface of the sixth lensL6;

R13: The curvature radius of the object side surface of the glass plateGF;

R14: The curvature radius of the image side surface of the glass plateGF;

d: The thickness on-axis of the lens and the distance on-axis betweenthe lens;

d0: The distance on-axis from aperture S1 to the object side surface ofthe first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lensL1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lensL2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lens

L3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lensL4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lensL5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lensL6 to the object side surface of the optical filter GF;

d13: The thickness on-axis of the optical filter GF;

d14: The distance on-axis from the image side surface to the imagesurface of the optical filter GF.

It is to be understood, however, that even though numerouscharacteristics and advantages of the present exemplary embodiments havebeen set forth in the foregoing description, together with details ofthe structures and functions of the embodiments, the disclosure isillustrative only, and changes may be made in detail, especially inmatters of shape, size, and arrangement of parts within the principlesof the invention to the full extent indicated by the broad generalmeaning of the terms where the appended claims are expressed.

What is claimed is:
 1. A camera lens comprising, from an object side toan image side in sequence: a first lens having a positive refractivepower, a second lens having a negative refractive power, a third lenshaving a positive refractive power, a fourth lens having a negativerefractive power, a fifth lens having a positive refractive power, and asixth lens having a negative refractive power; wherein the camera lensfurther satisfies the following conditions (1)˜(3):1.00≤f1/f≤1.10   (1)11.40≤(R7+R8)/(R7−R8)≤16.00   (2)0.15≤(R9+R10)/(R10−R10)≤0.25   (3) where f: the focal length of thecamera lens; f1: the focal length of the first lens; R7: the curvatureradius of the object side surface of the fourth lens; R8: the curvatureradius of the image side surface of the fourth lens; R9: the curvatureradius of the object side surface of the fifth lens; R10: the curvatureradius of the image side surface of the fifth lens.
 2. The camera lensas described in claim 1 further satisfying the following condition (4):0.15≤f2/f4≤0.16   (4) where f2: the focal length of the second lens; f4:the focal length of the fourth lens; d10: The distance on-axis from theimage side surface of the fifth lens to the object side surface of thesixth lens.
 3. The camera lens as described in claim 1 furthersatisfying the following condition (5):2.30≤R11/f≤2.50   (5) where f: the focal length of the camera lens; R11:the curvature radius of the object side surface of the sixth lens.